magma

More on magma from Fact Monster:

lava - lava lava , molten rock that erupts on the earth's surface, either on land or under the ocean, ...

Volcanoes of the World - Volcanoes of the World Source: U.S. Dept. of the Interior, Geological Survey About 550 volcanoes ...

Volcanoes - One of the most fascinating, if tragic, natural disasters of the last two thousand years occurred on August 24, 79 A.D. On this day, Mount Vesuvius (located near Naples, Italy) erupted, engulfing the nearby cities of Pompeii and Herculaneum in a tremendous flow of cinder, ashes, and mud.

VOLCANOES - A volcano is a vent or weak spot in Earth’s crust through which magma (hot, melted rock) escapes as LAVA. In some places, lava oozes slowly out of the

VOLCANOES - Volcanoes are vents (openings) in the ground from which magma (molten rock), ash, gas, and rock fragments surge upwards, in an event called an eruptio